Date: Tue, 15 Jul 2003 00:53:09 +0200 From: Francesco Casadei <fcasadei@inwind.it> To: othermark <atkin901@yahoo.com> Cc: freebsd-questions@freebsd.org Subject: Re: IPv4/IPv6 dual-stack, IPv4-only and IPv6-only Message-ID: <20030714225309.GA904@goku.kasby> In-Reply-To: <slrnbh5nl6.2meb.atkin901@adkinson245.f5net.com> References: <20030713105532.GA856@goku.kasby> <slrnbh5nl6.2meb.atkin901@adkinson245.f5net.com>
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[-- Attachment #1 --] On Mon, Jul 14, 2003 at 04:46:40PM +0000, othermark wrote: > Comments in-line: > > In article <20030713105532.GA856@goku.kasby>, Francesco Casadei wrote: > > > > --UlVJffcvxoiEqYs2 > > Content-Type: text/plain; charset=us-ascii > > Content-Disposition: inline > > Content-Transfer-Encoding: quoted-printable > > > > I need to setup an IPv4/IPv6 dual-stack host, > > This works as default. Just ifconfig your ipv6 address. > > > IPv4/IPv6 dual-stack host connected to the 6bone through freenet6. > > Works with the freenet port. What this basically does is tunnel the > the ipv6 traffic between two ipv4 hosts. > > > act as an IPv6 gateway for the other PC, configured as an IPv6-only host and > > IPv4-only host by installing twice FreeBSD and using dual-boot. > > > > Is this possible to achieve? Does anybody know how to do this? Furthermo= > > Your setup is reasonable. You don't even need to dual boot the client > behind the firewall, let it run dual/stack too. However, your setup > will work the best if both the firewall and the client have publicly > routeable ipv4 addresses. In other words NATing ipv4 via your > firewall will probably break things. Ipv6 traffic from your client to > your freenet6 enabled ipv6 router should work just fine. > > > re, > > how can an application detect system's configuration (IPv4/IPv6, IPv4-only, > > IPv6-only)? > > By looking at the configured address. Most applications that are > enabled for ipv6 are capable of running both ipv4 or ipv6 by > abstracting the ipaddress type and changing to use a few different > function calls (inet_ntop and inet_pton mainly). > > --- > Mark > atkin901 at NOSPAM yahoo dot com > (!wired)?(coffee++):(wired); > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > end of the original message I'm already trying to configure a 6to4 tunnel to the 6bone through freenet6, but as you've pointed out it doesn't work with a private IPv4 address behind NAT. I don't have a public IPv4 address to do static NAT to the dual-stack host, so I will try to set the router in bridge-mode and use PPTP-to-PPPoA and mpd to connect the dual-stack host to the Internet with the public IPv4 address given by my ISP. Regarding my previous question ("how can an application detect system's configuration?"), what I was really asking is: a failing socket(AF_INET, ...) syscall with error EINVAL can be considered a test for an IPv6-only host? Similarly, a failing socket(AF_INET6, ...) syscall with error EINVAL can be considered a valid test for an IPv4-only host? Francesco Casadei -- You can download my public key from http://digilander.libero.it/fcasadei/ or retrieve it from a keyserver (pgpkeys.mit.edu, wwwkeys.pgp.net, ...) Key fingerprint is: 1671 9A23 ACB4 520A E7EE 00B0 7EC3 375F 164E B17B [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.2 (FreeBSD) iD8DBQE/EzRVfsM3XxZOsXsRAjzwAKCIbc7vZziskehxsRq7t4QmpdLV4wCeMmyh +AKww0T4TxIyqZi8+qhcd74= =+Yah -----END PGP SIGNATURE-----home | help
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